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How to replace the alternator in silverado 03

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Dead battery in 2 days-Silverardo 03 diesel


Are you certain you got to all fuses? The under hood fuses, the driver's side fuse panel- is it possible for another fuse panel in the cab?
Disconnect the alternator and see what happens.

Dec 21, 2013 | Cars & Trucks

1 Answer

03 chevy 6.6 runs, then when left overnight, battery's will be completely dead


Thats probably a bad battery, if it runs the whole day. You can take the battery to most auto parts stores and they will tell you if your battery is good, usually for no charge. If thats not your problem then your either looking at an alternator issue or you have a drain on your electrical system.

Nov 25, 2013 | 2003 Chevrolet Silverado 2500HD

1 Answer

Half of the dash lights are out on my 2003 silverado


My brothers got an 03 Silverado had problems with some gauges, turns out they had a factory recall on the entire gauge cluster. He took it in they replaced the whole thing free and no more issues.

Jun 21, 2012 | 2003 Chevrolet Silverado 1500

1 Answer

I have a 2003 Chevy Silverado 2500. Once again, it wouldn't start. The battery was completely dead, and it would not even start with a jump. Replaced the battery, started fine. But, now the voltage...


Battery was completely dead ? after how long , over night , or just out of the blue ? These year GM vehicle's 03 to 06 have instrument cluster problems , draining the battery . Do you know what parasitic draw is ? Google it . They used lead free solder constructing the electronics , an after a while it causes silver migration .
Chevrolet Truck Battery Dies Overnight Part
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Apr 19, 2017 | 2003 Chevrolet Silverado 2500HD

1 Answer

2003 SILVERADO SPEEDOMETER GOES CRAZY WHEN ITS COLD. WHAT COULD BE WRONG


Hi,

There's a very common issue with 03-06 Silverado speedometers where they go out due to failing gauge motors. It is repairable and you don't have to replace the entire cluster. Check here for more information - Silverado instrument cluster repair

Nov 23, 2010 | Chevrolet 1500 Cars & Trucks

1 Answer

My 03 Silverado has parasitic battery drain. VOM


Disconnect the auxiliary power cable from the under-hood distribution center that runs to the anti-lock brake controller. Remove the ignition relay from this distribution center (this will isolate/eliminate/indicate the problem as the ignition switch). Unplug any GPS add-on device, and any radar detector, stereo amplifier add-on, I-pod, trailer brake controller add-on, anything that did not come on the truck from the factory. These can be frustrating.

Feb 13, 2010 | 2000 Chevrolet Silverado 1500

2 Answers

Chevrolet 2006 EGR Valve


The 2006 Silverado doesn't have EGR. They did away with it in '03 I believe.

Jul 25, 2008 | 2006 Chevrolet Silverado 1500 2WD

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